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Characteristics of OvertheHorizon Radar
The Radar Equation
Methods for Calculating the Path Loss
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absorption active interference adaptive beamforming algorithm amplitude angle of arrival anti-interference approximation atmospheric interference attenuation azimuth bandwidth beam Block diagram calculated cancelation clutter coefficient complex components corresponding decibels determined distribution Doppler shift effects energy equation estimate false alarm filter function Gaussian geometric optics HF band inhomogeneities interference level interference with unknown interval intrapulse ionospheric ducts large number layer loss meteor trail methods minimax Moscow narrow-band interference noise nonstationary interference oblique sounding obtained operating frequency optimal optimum decision rule OTH radar output over-the-horizon radar P-vector probability of false problem pulse pulse-to-pulse RADAR CROSS SECTION radar equation radiation radio waves range rapidly fluctuating signal ray optics receiver channels reflected RTW signals scattering shown in Fig sidelobes signal and interference signal-to-interference ratio slowly fluctuating signal Sovietskoe Radio spatial spectral spectral density spectrum statistics threshold transformation unknown a priori vector voltages